Mira Advance Maintance Manual

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Maintenance Guide

Operation &B

Installation

ELECTRIC SHOWERS

Standard & MemoryStandard & Memory

Standard & Memory

models coveredmodels covered

models covered

THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USERTHESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER

THESE INSTRUCTIONS ARE TO BE LEFT WITH THE USER

22

2

ContentsContents

Contents

PagePage

Page

IntroductionIntroduction

Introduction

..........................................................................................................................

.............................................................

33

3

Important Safety InformationImportant Safety Information

Important Safety Information

............................................................................................

..............................................

44

4

Pack Contents ChecklistPack Contents Checklist

Pack Contents Checklist

..........................................................................................................

.....................................................

77

7

DimensionsDimensions

Dimensions

..........................................................................................................................

.............................................................

88

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Wiring DiagramWiring Diagram

Wiring Diagram

........................................................................................................................

............................................................

1010

10

SpecificationsSpecifications

Specifications

........................................................................................................................................

....................................................................

1111

11

Installation RequirementsInstallation Requirements

Installation Requirements

....................................................................................................

..................................................

1212

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InstallationInstallation

Installation

........................................................................................................................

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1616

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CommissioningCommissioning

Commissioning

....................................................................................................................................

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2121

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OperationOperation

Operation

......................................................................................................................................................

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2323

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Fault DiagnosisFault Diagnosis

Fault Diagnosis

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2929

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MaintenanceMaintenance

Maintenance

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3636

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Maximum Temperature SettingMaximum Temperature Setting

Maximum Temperature Setting

....................................................................................

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4242

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Spare PartsSpare Parts

Spare Parts

................................................................................................................................................

........................................................................

4343

43

Guarantee, Customer Care Policy, and How to contact usGuarantee, Customer Care Policy, and How to contact us

Guarantee, Customer Care Policy, and How to contact us

..............................................................................................................................................

.......................................................................

Back covBack cov

Back cov

erer

er

33

3

Section

1

IntroductionIntroduction

Introduction

Thank you for purchasing a quality Mira product. To exploit the full potential of your new shower, please take time to read this guide thoroughly, having done so, keep it handy for future reference.

The Mira Advance is a high performance electric shower, which provides thermostatic temperature control. The Mira Advance compensates for pressure, temperature and voltage changes to achieve a very accurate temperature whilst showering. Separate push-button controls allow the user to select three independent flow settings. The Mira Advance features as standard, a safe ‘maximum temperature setting’, but also has a special feature which allows the shower temperature to be limited to 43°C.

A memory control version is available which allows the user to preset five choices of flow level and temperature, which can be recalled on demand.

For healthcare or special need requirements, refer to "Maximum Temperature Setting". Mira Advance covered by this guide: Mira Advance (standard control)Mira Advance (standard control)

Mira Advance (standard control)Mira Advance (standard control)

Mira Advance (standard control) 8.7 kW 240 Volts, 8.0 kW 230 Volts Mira Advance (standard control)Mira Advance (standard control)

Mira Advance (standard control)Mira Advance (standard control)

Mira Advance (standard control) 9.8 kW 240 Volts, 9.0 kW 230 Volts Mira Advance (Mira Advance (

Mira Advance (Mira Advance (

Mira Advance (

memorymemory

memory

control) control)

control) 8.7 kW 240 Volts, 8.0 kW 230 Volts

Mira Advance (Mira Advance (

Mira Advance (

memorymemory

memory

control) control)

control) 9.8 kW 240 Volts, 9.0 kW 230 Volts

If you experience any difficulty with the installation or operation of your new Mira Advance, then please refer to

Fault DiagnosisFault Diagnosis

Fault Diagnosis, before contacting Caradon Plumbing Solutions. Our telephone and fax numbers can be found on the back cover of this guide.

44

4

Section

2

Important Safety InformationImportant Safety Information

Important Safety Information

1.1.

1.

WW

W

arar

ar

ning!ning!

ning!

1.1.1.1.

1.1. Products manufactured by us are safe and without risk provided they are installed, used and maintained in good working order in accordance with our instructions and recommendations.

1.2.1.2.

1.2. THIS MIRA ADVANCE

MUSTMUST

MUST BE EARTHED.

1.3.1.3.

1.3. In accordance with the current edition of ‘The Plugs and Sockets etc. (Safety) Regulations in force at the time of installation, this Mira Advance is intended to be permanently connected to the fixed electrical wiring of the mains system.

1.4.1.4.

1.4.

DO NOTDO NOT

DO NOT twist the individual cable cores of the live and neutral conductors, as this will prevent them from entering the terminal block.

1.5.1.5.

1.5. Make sure that any pipework that could become frozen is properly insulated.

1.6.1.6.

1.6.

DO NOTDO NOT

DO NOT operate this Mira Advance if it is frozen. Allow the Mira Advance to thaw before using again. The shower unit must not be fitted where it may be exposed to freezing conditions.

1.7.1.7.

1.7. If water leaks from the pressure relief valve, maintenance will be required before the Mira Advance can be safely used.

1.8.1.8.

1.8.

DO NOT DO NOT

DO NOT fit any form of outlet flow control as the outlet acts as a vent for the tank body. Only Mira recommended outlet fittings should be used.

1.9.1.9.

1.9. There are no user serviceable components beneath the cover of the Mira Advance. Only a competent tradesperson should remove the cover.

1.10.1.10.

1.10. If any of the following conditions occur, isolate the electricity and water supplies and refer to

“To contact us”“To contact us”

“To contact us”, on the back page of this guide.

1.10.1.1.10.1.

1.10.1. If the cover is not correctly fitted and water has entered the Mira

Advance case.

1.10.2.1.10.2.

1.10.2. If the case is damaged.

1.10.3.1.10.3.

1.10.3. If the Mira Advance begins to make an odd noise, smell or smoke.

1.10.4.1.10.4.

1.10.4. If the Mira Advance shows signs of a distinct change in performance,

indicating a need for maintenance.

1.10.5.1.10.5.

1.10.5. If the Mira Advance is frozen.

55

5

1.11.1.11.

1.11. Isolate the electrical and water supply before removing the cover.

1.12.1.12.

1.12. Mains connections are exposed when the cover is removed.

1.13.1.13.

1.13. Refer to the wiring diagram before making any electrical connections.

1.14.1.14.

1.14. Ensure all electrical connections are tight, to prevent overheating.

2. Caution!2. Caution!

2. Caution!

2.1.2.1.

2.1.

Read all of these instructions and retain this guide for later use.Read all of these instructions and retain this guide for later use.

Read all of these instructions and retain this guide for later use.

2.2.2.2.

2.2. Pass on this guide in the event of change of ownership of the installation site.

2.3.2.3.

2.3. Follow all warnings, cautions and instructions contained in this guide, and on or inside the Mira Advance.

2.4.2.4.

2.4. The electrical installation must comply with the “Requirements for Electrical Installations” commonly referred to as the IEE Wiring Regulations, or any particular regulations and practices, specified by the local electricity supply company in force at the time of installation. The installation should be carried out by an electrician or contractor who is registered, or is a member of, an association such as:

2.5.2.5.

2.5. This is a high power unit; it is essential to contact your electricity supply company to ensure that the electricity supply is adequate for the purpose.

2.6.2.6.

2.6. The plumbing installation must comply with the requirements of UK Water Regulations/Bylaws (Scotland), Building Regulations or any particular regulations and practices, specified by the local water company or water undertakers. The installation should be carried out by a plumber or contractor who is registered, or is a member of, an association such as:

2.4.1.2.4.1.

2.4.1. National Inspection Council for Electrical Installation and Contracting

(NICEIC), throughout the UK, Tel: 0171 582 7746.

2.4.2.2.4.2.

2.4.2. The Electrical Contractors Association (ECA), England and Wales,

Tel: 0171 229 1266.

2.4.3.2.4.3.

2.4.3. The Electrical Contractors Association of Scotland (ECAS),

Tel: 0131 445 5577.

2.6.1.2.6.1.

2.6.1. Institute of Plumbing (IOP), throughout the UK, Tel: 01708 472791.

2.6.2.2.6.2.

2.6.2. National Association of Plumbing, Heating and Mechanical Services

Contractors (NAPH & MSC), England and Wales, Tel: 01203 470626.

2.6.3.2.6.3.

2.6.3. Scottish and Northern Ireland Plumbing Employers’ Federation (SNIPEF),

Scotland and Northern Ireland, Tel: 0131 225 2255.

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2.7.2.7.

2.7. Anyone who may have difficulty understanding or operating the controls of any shower should be attended whilst showering. Particular consideration should be given to the young, the elderly, the infirm, or anyone inexperienced in the correct operation of the controls.

2.8.2.8.

2.8. When this Mira Advance has reached the end of its serviceable life, it should be disposed of in a safe manner, in accordance with current local authority recycling, or waste disposal policy.

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Section

3

PP

P

acac

ac

k Contents Check Contents Chec

k Contents Chec

klistklist

klist

or

¨ Tick the appropriate boxes to familiarize yourself with the part names and to confirm that the parts are included.

ü

1 x Mira Advance ¨

1 x Olive ¨

2 x Wall Screws ¨

2. Documentation2. Documentation

2. Documentation

1 x Installation, Operation and Maintenance Guide ¨ 1 x Customer Support Brochure ¨

1 x Wall Plugs ¨

1 x Earth Sleeve ¨

1 x Compression Nut ¨

(for fitting to existing tap connector)

1 x Tap Connector Adaptor¨

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Caradon Mira contact telephone and fax numbers.

4

DimensionsDimensions

Dimensions

Section

168

395

1.1.

1.

Mir Mir

Mir

a Adva Adv

a Adv

anceance

ance

168

68

84.5

68

84.5

Standard Model

Memory Model

All dimensions are nominal and in millimetres.

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    





L

N

Important PointsImportant Points

Important Points

11

1 The top and bottom of

the case walls have thinned sections for ease of removal to accept top or bottom water inlet.

22

2 The hatched areas are

case cutouts to allow cable and pipe access.

33

3 Ensure screw fixings do

not puncture buried cables.

73

Mira Advance centre line

Inlet Connector centre line

46.5

Supply pipe centre line

288

395

59

95

168

101

73

360

367

Inlet Connector Assembly (Bottom inlet shown)

All dimensions are nominal and in millimetres.

2.2.

2.

WW

W

ater and Cabater and Cab

ater and Cab

le Entrle Entr

le Entr

y Py P

y P

ointsoints

oints

1010

10

5

MirMir

Mir

a Adva Adv

a Adv

ance ance

ance

WirWir

Wir

ing Diaging Diag

ing Diag

rr

r

amam

am

Section

Relay Board

E

Inlet Sensors

Red

Brown (77)

Brown

Solenoid Valve

Transformer

230/240 V AC Only

Green/Yellow

Brown

Double Pole Switch

45A Break Capacity

3 mm Contact Separation

L N

PL2

PL1

Main Control Board

(78)

PL2

PL6

PL5

PL4

PL1

PL8

PL3

PL7

PL10

Green/Y (75)

Inlet Outlet

Terminal Block

Outlet Temperature Sensor

One Shot Thermal Trip

Temperature Potentiometer

Blue

Heater Tank

Plumbing Connectors

PL12

PL11

1111

11

Section

5

SpecificationsSpecifications

Specifications

1. Plumbing1. Plumbing

1. Plumbing

1.1.1.1.

1.1. The inlet connector assembly incorporates an inlet filter, which swivels to allow these entry positions, top, top back, bottom and bottom back inlet.

1.2.1.2.

1.2. The outlet terminates with a 1/2" BSP male thread for connection to a Mira flexible shower hose.

1.3.1.3.

1.3. A maintained pressure of at least

1 bar1 bar

1 bar is recommended for the product up to a

maximum static pressure of

10 bar10 bar

10 bar.

Thermostatic performance will be maintained down to

0.5 bar0.5 bar

0.5 bar maintained

pressure. However, this will result in reduced power and therefore reduced flow.

1.4.1.4.

1.4. The Mira Advance will provide satisfactory performance with incoming water supply temperatures between 2°– 28°C.

1.5.1.5.

1.5. Maximum ambient temperature for the Mira Advance whilst in use is 30°C.

2. Electrical2. Electrical

2. Electrical

2.1.2.1.

2.1. Mira Advance supply fuse - 8.7 kW 40 Amp

9.8 kW 45 Amp

2.2.2.2.

2.2. The terminal block will not accept cable larger than 16 mm2.

2.3.2.3.

2.3. The Mira Advance will provide satisfactory performance with an incoming electricity supply voltage of 230 V ± 10%.

3.3.

3.

Standards and Appro Standards and Appro

Standards and Appro

vv

v

alsals

als

3.1.3.1.

3.1. The Mira Advance has been designed to comply with the requirements of the British Electrotechnical Approvals Board (BEAB) and the requirements of UK Water Regulations/Bylaws (Scotland).

3.2.3.2.

3.2. This Mira Advance complies with all relevant directives for CE marking.

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1. Plumbing1. Plumbing

1. Plumbing

Read the section

"Important Safety Information""Important Safety Information"

"Important Safety Information" first.

1.1.1.1.

1.1. A maintained pressure of at least

1 bar1 bar

1 bar is recommended for the product up to a

maximum static pressure of

10 bar10 bar

10 bar.

Thermostatic performance will be maintained down to

0.5 bar0.5 bar

0.5 bar maintained

pressure. However, this will result in reduced power and therefore reduced flow.

1.2.1.2.

1.2. The Mira Advance is suitable for installation within the shower area and must be positioned over a water catchment area with the controls at a convenient height for the user. The shower fitting should be positioned so that it discharges down the centre line of the bath, or across the opening of a shower cubicle, and must be directed away from the Mira Advance.

1.3.1.3.

1.3. The Mira Advance is fitted with an inlet connector assembly that is designed to accept plumbing supplies from the top, bottom or back. The water supply can be fed with 15 mm pipe or 10 mm microbore pipe, suitably reduced into the inlet connector assembly. If 10 mm microbore is used, then an allowance for increased pressure loss must be made to ensure that the minimum maintained inlet pressure is achieved (see note above).

1.4.1.4.

1.4. The Mira Advance must be fitted

ONTOONTO

ONTO the finished wall surface i.e. on top

of the tiles.

DO NOTDO NOT

DO NOT block the air ventilation gaps around the sides of the unit, either by tiling up to the sides of the unit or by using a sealant around the case (Small pillars moulded on to the back of the case allow air circulation). This Mira Advance is designed to be ventilated. Failure to do this may cause product failure (Refer to Figure 1).

1.5.1.5.

1.5. Use only the inlet connector assembly supplied with the Mira Advance, do not use any other types of fitting.

Section

6

Installation RequirementsInstallation Requirements

Installation Requirements

Figure 1Figure 1

Figure 1

Figure 2Figure 2

Figure 2

Spill-over Level

25 mm minimum

1313

13

1.6.1.6.

1.6.

Do not install the Mira Advance in a position where it may becomeDo not install the Mira Advance in a position where it may become

Do not install the Mira Advance in a position where it may become frozen. frozen.

frozen. frozen.

frozen. The shower unit must not be fitted where it may be exposed to freezing conditions. Do not operate the unit if suspected of being frozen.

1.7.1.7.

1.7. When installing the inlet connector for back inlet supply (refer to

InstallationInstallation

Installation) connection, it is advisable to seal around the incoming mains-fed supply to prevent water ingress into the wall.

1.8.1.8.

1.8. We recommend that a non-restrictive (free flowing) isolating valve is fitted in the cold water supply pipe to allow the complete maintenance of the Mira Sport.

DoDo

Do

notnot

not use a valve with a loose washer plate (jumper) as this can lead to a build up of static pressures.

1.9.1.9.

1.9. The Mira Advance is fitted with a 1/2" BSP male outlet thread, to accept a Mira shower hose.

1.10.1.10.

1.10. Refrain from applying excessive force when making any connections. Always provide mechanical support when making the plumbing connections.

1.11.1.11.

1.11. To avoid damage to the case when soldered fittings are used, pre-solder the pipework and fittings before connecting them to the inlet connector assembly.

Note!Note!

Note! Supply pipework MUST be flushed to clear debris before connecting the

Mira Advance.

Debris will reduce the performance of the unitDebris will reduce the performance of the unit

Debris will reduce the performance of the unit.

1.12.1.12.

1.12. When installed in very hard water areas (above 200 ppm temporary hardness) your installer may advise the installation of a water treatment device, to reduce the effects of limescale formation. Mira Sport malfunction due to excessive limescale formation is not covered by the manufacturer’s guarantee. Your local water company will be able to advise the hardness of water in your area.

1.13.1.13.

1.13. A hose retaining ring is supplied to prevent the handset from dropping below the spillover level of the bath or shower, which could lead to contamination from backsiphonage (refer to Figure 2). The supplied hose retaining ring should meet the great majority of user requirements for shower installations with flexible outlet fittings. However, there will be occasions when the hose retaining ring will not provide a suitable solution. In these instances an outletoutlet

outletoutlet

outlet double checkvalve, e.g. the Mira DCV-H,

mustmust

must be fitted. The inclusion of the Mira DCV-H will increase the required supply pressure typically by 0.1 bar. Double checkvalves, fitted in the inlet supply to the appliance, cause a pressure buildup, which could exceed the maximum static inlet pressure for the appliance.

1.14.1.14.

1.14. Avoid layouts where the shower hose will be sharply kinked. This may reduce the life of the hose.

1414

14

2. Electrical2. Electrical

2. Electrical

Read the section

"Important Safety Information""Important Safety Information"

"Important Safety Information" first.

2.1.2.1.

2.1. The electrical installation must comply with the “Requirements for Electrical Installations” commonly referred to as the IEE Wiring Regulations, or any particular regulations and practices, specified by the local electricity supply company in force at the time of installation.

2.2.2.2.

2.2. In a domestic installation, the rating of the electricity supply company fuse and the consumer unit must be adequate for the additional demand. As these Mira Advances are high power units, it is essential to contact your electricity supply company to ensure that the supply is adequate for the Mira Advance. Voltage drop due to local heavy demand will reduce the shower's performance.

2.3.2.3.

2.3. The Mira Advance

must be earthedmust be earthed

must be earthed by connecting the supply-cable earth

conductor to the earth terminal.

Supplementary bonding:Supplementary bonding:

Supplementary bonding: Within the bathroom or shower room, all accessible conductive parts of electrical equipment and extraneous conductive parts that are likely to introduce earth potential, must be electrically bonded to earth using a minimum cable size of 4.0 mm

2

if the

cable is not mechanically protected (2.5 mm2 if mechanically protected).

2.4.2.4.

2.4. The minimum cable size (cross-sectional area) required is 6 mm2 under normal conditions of installation.

Important!Important!

Im p o r t a nt! The shower circuit should be separated from other circuits by at least twice the diameter of the cable or conduit and it should not be run through thermally insulating material or in locations where the ambient temperature is likely to exceed 30 °C. If any of these conditions are unavoidable it is necessary to determine the cable size which will prevent damage to the cable caused by overheating.

2.5.2.5.

2.5. Do not turn-on the electrical supply until the plumbing has been completed.

2.6.2.6.

2.6. A separate, permanently connected supply must be taken from the consumer unit to the Mira Advance through a double-pole switch, which has at least 3 mm contact separation. The switch can be a ceiling mounted pull-cord type within the shower room or a wall mounted switch in an adjacent room.

The minimum cable size required is 6 mm2. To minimise voltage drop, and thereby maximise performance, use the shortest possible cable route from the consumer unit to the Mira Advance.

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Flow

Plumbing and Electrical Schematic DiagramPlumbing and Electrical Schematic Diagram

Plumbing and Electrical Schematic Diagram

Figure 3Figure 3

Figure 3

Mira Advance

Optional Outlet Double Checkvalve

Double-pole Isolating Switch

Hose Retaining Ring

Mains-fed Cold

Water Supply

Consumer Unit

Isolating Valve

2.7.2.7.

2.7. A 30 mA RCD

MUSTMUST

MUST be fitted. This may be part of the consumer unit or a

separate unit.

Note!Note!

Note! The terminal block will not accept cable larger than 16 mm2.

2.8.2.8.

2.8.

DO NOTDO NOT

DO NOT twist the individual cable cores of the live and neutral conductors, as this will prevent them from entering the terminal block.

2.9.2.9.

2.9.

DO NOTDO NOT

DO NOT exert strain on the terminal block.

2.10.2.10.

2.10.

DO NOTDO NOT

DO NOT turn-on the electrical supply until the plumbing has been completed.

Mira Advance Maintance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual